| 摘要 |
PURPOSE:To obtain the titled compound of good hue useful as a raw material for liquid crystals, etc. in high yield in one step using an inexpensive oxidizing agent, by treating p-cyanobenzyl chloride with an aqueous solution of hexamethylenetetramine in the two-layer system of oil and water. CONSTITUTION:p-Cyanobenzyl chloride is dissolved in a water-immiscible hydrophobic inert organic solvent, e.g. benzene, toluene or xylene, and reacted with an aqueous solution of hexamethylenetetramine in the two-layer system of oil and water at 60-100 deg.C to give the aimed substance. The molar amount of the hexamethylenetetramine to be used is 1-2 times that of the p-cyanobenzyl chloride, and the amount of the solvent to be used is 1-6 times that of the p- cyanobenzyl chloride. The p-cyanobenzyl chloride is obtained by reacting p-tolunitrile with chlorine in the presence of light or a radical initiator.
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